Tool.



L. PIGNANI.

TOOL.

APPLICATION FILED SEPT.5. 19w.

Patented May 21,1918.

'INVEIVTQR 01'61220 Pyzzazzz UNITED STATES TOOL. I

. Specification of Letters Patent.

Patented May 21, 1918.

Application filed September 5, 1917. Serial No. 189,807. I

To It 20710172 it may concern:

Be it known that I. Lonnxzo PIGNANI, a subject of the King of Italy, and a resident of Dilltown, in the county of Indiana and State of Pennsylvania, have invented a new and Improved Tool, of which the following is a full. clear, and exact description.

My invention relates to a combination tool, and more particularly to a wrench to be associated with a hammer or equivalent tool and received in a slot in said hammer.

An object of the invention is to provide an eiiicient wrench so formed as to have a wide range of usefulness in accommodating itself to nuts of diiferent sizes, and to provide means coacting with said wrench to lock the latter in position in the hammer or other tool.

Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a side elevation of a tool embodying my invention, the locking element being partly in section;

Fig. 2 is a side elevation taken at rightangles to Fig. 1;

Fig. 3 is a perspective view of the wrench removed from the hammer;

Fig. 4 is a detail in longitudinal section on the line 41 of Fig. 3.

The numeral 10 indicates the shank of a hammer or like tool, 11, the head thereof; and 12 designates generally my improved wrench which is adapted to be received in a longitudinal slot 13 extending through the head 11, and longitudinally in the shank 10.

The wrench 12 is generally of flat form and has a broadened head 14 in which is formed a transverse polygonal opening 15, here shown as hexagonal adapted to accommodate a hexagonal nut of a given size. Fitting in the opening 15 is a wrench element 16 in the form of a polygonal ring, the external surface of said element corresponding with the polygonal form of the walls of the opening 15 while the interior presents a hexagonal form to receive a nut of smaller size than the opening 15. Thus, a nut of a given size will be accommodated in the opening 15 by the removal of the element 16, or

withthe element 16 in place the smaller nut may be turned. To removably hold the element 16 in position, a set-screw 19 is employed extending through the wrench at the base of the head 1 1 to be projected into the opening 15 or withdrawn therefrom, the forward end of said set-screw being reduced to present a tenon 18 which is receivable in a transverse slot 17 in the edge of the element 16 at an angle thereof. The set-screw 19 has a knurled head 20 or equivalent formation extending into a transverse opening 21 formed longitudinally in the flat shank 2-2 of the wrench. Said opening 21 is stepped at the oposite sides as at 21, 21 to thereby adapt the different portions of the opening to nuts of different sizes. The head 20 of the set-screw lies in the widest part of the opening 21, that is to say, that end adjacent to the head 14, and the set-screw 19 may be removed when a nut is to be accommodated in the said wider end of the opening 21.

At the opposite end of the shank 22 from the head 11 an alligator wrench 24: is provided, the diverging jaws of which have external threaded elements 25 formed thereon. lVhen the wrench is in position in the slot 13, and the jaws 24 disposed at the rear end of said slot, the threaded elements 25 are adapted to be engaged by the internal threads of a nut or ring 26 on the shank 10 adjacent to a shoulder 1O on said shank. The arrangement is such that the turning of the nut or ring 26 will lock or release the jaws 24 to firmly hold the wrench in position in the hammer or to permit the wrench to.

be withdrawn for use. The described construction, it will be seen, coordinates the wrench with a hammer in a simple and compact manner.

In practice, the rear or handle end 10 of the shank 10 is provided on the rear end thereof with another wrench assembly designated generally by the character 10; which, however, forms no part of the present invention but constitutes the subject-matter of a separate application Serial No. 189,806, filed by me concurrently herewith.

I wish to state in conclusion that although the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without departure from thespirit of the'invention as sl'otl'extendling throng-h the front end or said element and into said shank, a second tool element fitting said slot and formed at'its rear end With. external threads, and a nut on said shank. at. the inner end of said slot, the threads of saidnut beingladapted to engage the threads on the second tool elementto hold-the latterinthe said slot and thereby i'naintainthewhole assembled.

2. In a tool and holding means therefor,

iartubula'r element-havinga longitudinal slot extending therein from the front end, a nut "-revoluble on said element at the rear end of said slot, and a tool adapted to be accommodated in? said slot, said tool having at'its LORENZO PIGNANI.

"Copies ,of this pate nt maybe obtaindfor five cents each, by -addressing the Commissioner of Patents,

I Wa'shingtonjDlG. 

